| DC-4E | |
|---|---|
 The giant new DC-4E at the United Air Lines base at Oakland Airport |
|
| Type | Experimental airliner |
| Manufacturer | Douglas Aircraft Company |
| Maiden flight | 7 June 1938 |
| Primary user | United Airlines |
| Number built | 1 |
The Douglas DC-4E was an American experimental airliner that was developed before World War II. An aerospace manufacturer is a company or individual involved in the various aspects of designing building testing selling and maintaining Aircraft, Aircraft parts The Douglas Aircraft Company was an American Aerospace manufacturer, based in Long Beach California. The maiden flight of an Aircraft is the first occasion on which an aircraft leaves the ground of its own accord Events 1099 - The First Crusade: The Siege of Jerusalem begins This is a list of Aviation -related events from 1938: Events Imperial Airways inaugurates scheduled service from London United Air Lines Inc, trading as United Airlines ( is a major airline of the United States. The Douglas Aircraft Company was an American Aerospace manufacturer, based in Long Beach California. The United States of America —commonly referred to as the World War II, or the Second World War, (often abbreviated WWII) was a global military conflict which involved a majority of the world's nations, including The design originated in 1935 from a requirement by United Air Lines. This is a list of Aviation -related events from 1935: Events January January 11 - 12 – Amelia Earhart United Air Lines Inc, trading as United Airlines ( is a major airline of the United States. The goal was to develop a much larger and more sophisticated replacement for the DC-3, before the first DC-3 had even flown. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout There was enough interest from other airlines, that American Airlines, Eastern Air Lines, Pan American Airways, and TWA joined United in providing $100,000 each toward the cost of developing the new aircraft. American Airlines Inc (AA is a US -based airline and the world's Largest airline in total passenger miles transported and passenger fleet size Eastern Air Lines was a major United States Airline that existed from the late 1920s until 1991 Trans World Airlines ( TWA) renamed TWA Airlines LLC in 2001 was a major U Pan American and TWA later withdrew their funds in favour of the Boeing 307 which was seen as being more economical. The Boeing Model 307 Stratoliner was the first commercial transport Aircraft with a pressurized cabin.
With a planned capacity of 42 passengers, the DC-4 (as it was then known) would seat twice as many people as the DC-3. It would be the first large airplane with a nose wheel. Other innovations included auxiliary power units, power-boosted flight controls, alternating current electrical system, and air conditioning. Cabin pressurization was also planned for the production aircraft. The aircraft also featured a novel tail with three vertical stabilizers. The vertical stabilizers, or fins, of Aircraft, Missiles or Bombs are typically found on the aft end of the Fuselage or body This provided sufficient vertical stabilizer area to allow the aircraft to take-off with only two engines on one side operating while still allowing the plane to fit into existing hangars.
The prototype first flew on June 7, 1938 from Clover Field in Santa Monica, California. Events 1099 - The First Crusade: The Siege of Jerusalem begins This is a list of Aviation -related events from 1938: Events Imperial Airways inaugurates scheduled service from London Santa Monica Airport, also known as Santa Monica Municipal Airport, is a General aviation Airport located in the heart of the residential community It was used by United Air Lines for in-service evaluation during 1939. This is a list of Aviation -related events from 1939: Events January January 12 - the RAF Auxiliary Air Force Reserve Operating the aircraft was remarkably trouble-free. However, the complex systems proved to be expensive to maintain and the design was abandoned in favor of a less complex four-engined design. This newer design was designated DC-4, leading to the earlier design to be re-designated DC-4E (E for "experimental"). WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout The DC-4E was sold to Japan, which was buying western aircraft for evaluation and technology transfer during this period. The design became the basis of the Nakajima G5N bomber. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout
Contents |
Specifications (Douglas DC-4E)
General characteristics
- Crew: three
- Capacity: 52 passengers
- Length: 97 ft 0 in (29. 7 m)
- Wingspan: 97 ft 0 in (29. The wingspan (or just span) of an airplane or a Bird, is the distance from the left wingtip to the right wingtip 7 m)
- Height: 24 ft 6 1/2 in (7. 4 m)
- Wing area: 2,155 ft² (200. 2 m²)
- Empty weight: 42,564 lb (19,308 kg)
- Loaded weight: 61,500 lb (27,896 kg)
- Max takeoff weight: 66,500 lb (30,164 kg)
- Powerplant: 4× Pratt & Whitney R-2180-S1A1-G Twin Hornet, 1,450 hp (1,081 kW) each
Performance
- Maximum speed: 245 mph at 7,000 ft (394 km/h at 2,135 m)
- Range: 2,200 miles (3,540 km)
- Service ceiling 22,900 ft (6,980 m)
- Rate of climb: 1,175 ft/min (356 m/min)
- Wing loading: 28. The Maximum Takeoff Weight or Maximum Takeoff Mass of an Aircraft is the maximum weight at which the pilot of the aircraft is allowed to attempt to take off Pratt & Whitney is an American Aircraft engine manufacturer of products widely used in both civil and military aircraft. In Aviation, V-speeds or Velocity-speeds are standard terms used to define Airspeeds important or useful to the operation of Aircraft, such The maximal total range is the distance an Aircraft can fly between Takeoff and Landing, as limited by fuel capacity in powered aircraft or cross-country In Aeronautics, a ceiling is the maximum Density altitude an aircraft can reach under a set of conditions In Aerodynamics, the rate of climb RoC is the speed at which an Aircraft increases its Altitude. In Aerodynamics, wing loading is the loaded weight of the aircraft divided by the area of the wing 5 lb/ft² (139. 3 kg/m²)
- Power/mass: 0. Power-to-weight ratio (specific power is a calculation commonly applied to Engines and other mobile power sources to enable the comparison of one unit or design to another 09 hp/lb (0. 16 kW/kg)
References
- Francillon, René (1979). McDonnell Douglas Aircraft Since 1920: Volume I. London: Putnam. ISBN 0-87021-428-4
- Yenne, Bill (1985). McDonnell Douglas: A Tale of Two Giants. Greenwich, CT: Bison Books. ISBN 0-517-44287-6
- Pearcy, Arthur (1995). Douglas Propliners: DC-1 - DC-7. Shrewsbury: Airlife Publishing. ISBN 1-85310-261-X
External links
See also
Related development
Comparable aircraft
Related lists
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